1002002021010 has 48 divisors (see below), whose sum is σ = 2608788926016. Its totient is φ = 266832982944.

The previous prime is 1002002020973. The next prime is 1002002021021. The reversal of 1002002021010 is 101202002001.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1002002020983 and 1002002021001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7591624 + ... + 7722483.

It is an arithmetic number, because the mean of its divisors is an integer number (54349769292).

Almost surely, 2^{1002002021010} is an apocalyptic number.

1002002021010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1002002021010 is an abundant number, since it is smaller than the sum of its proper divisors (1606786905006).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1002002021010 is a wasteful number, since it uses less digits than its factorization.

1002002021010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15314847 (or 15314844 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 1002002021010 its reverse (101202002001), we get a palindrome (1103204023011).

The spelling of 1002002021010 in words is "one trillion, two billion, two million, twenty-one thousand, ten".